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Comport scan ok, but modbus serial error...

  • hi,
    I have some problem to connect datasource with modbus serial interface,
    the web page detect all my serial port, I see the serial activity in the preliminary serial port scan
    with a blink led rx tx on my arduino board, but if i configure the data source and then enable it,
    cause a java exception logged on apache-tomcat windows.

    this problem is present on my two different machine configuration:

    amd x64 with windows 7 x64 ultimate
    google chrome 8
    java jdk last ver
    rxtx and dll for x64 OS
    FDTI serial interface (USB)

    vmware x86 windows xp pro sp3
    google chrome8
    java jdk last version
    rxtx and dll for x86 OS(included rxtx don'twork)
    phisical com rs232 (linked on vmware hardware config to FDTI serial port on host os)

    Please help me!!

    thx for all,

    append a printscreen of error:


    append a apache-tomcat log:

    INFO: Server startup in 21795 ms
    Stable Library

    Native lib Version = RXTX-2.1-7
    Java lib Version = RXTX-2.1-7
    ERROR 2011-01-20 23:46:03,441 ( - DWR invocation exception
    java.lang.NoSuchMethodError: com.serotonin.modbus4j.ModbusFactory.createRtuMaster(Lcom/serotonin/io/serial/SerialParameters;I)Lcom/serotonin/modbus4j/
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(
    at java.lang.reflect.Method.invoke(
    at org.directwebremoting.impl.ExecuteAjaxFilter.doFilter(
    at org.directwebremoting.impl.DefaultRemoter$1.doFilter(
    at org.directwebremoting.impl.DefaultRemoter$1.doFilter(
    at com.serotonin.web.dwr.LocalizationFilter.doFilter(
    at org.directwebremoting.impl.DefaultRemoter$1.doFilter(
    at org.directwebremoting.impl.DefaultRemoter$1.doFilter(
    at org.directwebremoting.impl.DefaultRemoter.execute(
    at org.directwebremoting.impl.DefaultRemoter.execute(
    at org.directwebremoting.servlet.PlainCallHandler.handle(
    at org.directwebremoting.servlet.UrlProcessor.handle(
    at org.directwebremoting.servlet.DwrServlet.doPost(
    at javax.servlet.http.HttpServlet.service(
    at javax.servlet.http.HttpServlet.service(
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(
    at org.apache.catalina.core.StandardWrapperValve.invoke(
    at org.apache.catalina.core.StandardContextValve.invoke(
    at org.apache.catalina.core.StandardHostValve.invoke(
    at org.apache.catalina.valves.ErrorReportValve.invoke(
    at org.apache.catalina.core.StandardEngineValve.invoke(
    at org.apache.catalina.connector.CoyoteAdapter.service(
    at org.apache.coyote.http11.Http11Processor.process(
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(

    Attachment: download link

  • It looks like your Mango version is not compatible with the Modbus4J version you have. Did you update one and not the other?